Improvement in knitting-machines



L. D. SANBDRN.

Kni tting-Machines. No, 143,468, Patented Oct. 7,1373.

UNITED STATES PATENT OFFICE.

LORENZO D. SANBO RN OF OOHOES, NEW YORK.

IMPROVEMENT IN KNITTING-MACHINES.

Specification forming part of Letters Patent N 0. 143,468, dated October7, 1873; application filed September 3, 1873.

To all whom it may concern:

Be it known that I, LORENZO D. SANBORN, of Oohoes, in the county ofAlbany and State of New York, have invented certain Improve ments inKnitting-Machines, of which the following is a specification:

My invention relates to the Lamb knittingmachine; and it consists inapplying a springplate or bufier to each end of the machine for thepurpose of shifting the cams by a yielding instead of a fixed stop, asheretofore, and as hereinafter explained.

Figure 1 is a perspective view, and Fig. 2 a section showing thespring-plate in detail.

The Lamb knitting machine, as is well known to those familiar therewith,is provided with a reciprocating ficame, to which are attached twosliding plates for shifting the cams which operate the needles, andwhich sliding plates strike against rigid stops at each end, whicharrangement is objectionable for sev eral reasons; and my invention isintended to remedy these by providing yielding stops instead.

In the drawings, A represents the reciproeating frame, and B the slidingplates which shift the cams at each stroke, they being attached to andmovable with the frame A, but at the same time being so connectedthereto as to slide or move thereon, independently, far enough to shiftthe cams, or, rather, to be stopped while the frame moves on a shortdistance for that purpose. To the bed or main frame I of the machine, ateach end, I attach a spring plate or bar, L, as shown in Fig. l.

' This plate L is provided at its center with a tubular projection, O,in which is placed a rubber spring, 0, though any other kind of springmay be used; and through the center passes a screw, (1, which securesthe same to the main frame I, as shown in detail in Fig.

i l 2. At each end this plate L is provided with a vertical projection,01, against which the ends of the plates B strike, thereby compressingthe spring 0 at each stroke. In order to adjust the spring-plate L, acouple of screws, 6, are inserted through holes in the plate, and havetheir inner ends bearing against the end of the main frame, as shown inFig. 2, whereby V the plate or step can be set or adjusted, as may benecessary to give the required throw to the cam-shifters or plates B.

It is obvious that a separate spring-stop or bufier may be used on eachside of the frame,

instead of making the plate L long enough to act on. both camshifters atonce 5 but that would be a mere modification, and not so convenient orcheap as the plan shown.

By this improvement the sudden jar now imparted to the cam-shifters isavoided, and there is less wear of the parts, and also less noise thanwhen the rigid stop is used.

This improvement may be applied to :all machines of this kind, whetherrun by power or by hand. The form is of no consequence, so that it actson the plates B and does not interfere with the movements of thereciprocating frame.

Having thus described my invention, what I claim is- 1. The spring-st0pL or its equivalent, arranged to act, in combination with ,thecamshifters or plates B of a knitting-machine, substantially asdescribed.

2. The spring-stop L, provided with the screws 6, or equivalent meansfor adjusting it,

as set forth.

LORENZO D. SANBORN.

Witnesses:

E. L. STIMSON, S. 'E. SrIMsoN.

